using AcDream.App.Studio;
using AcDream.App.UI;
using AcDream.App.UI.Layout;

namespace AcDream.App.Tests.UI.Layout;

/// <summary>
/// Unit tests for <see cref="CharacterStatController"/> — the Attributes-tab controller that
/// binds the REAL importer-mounted header + list elements (no created overlay). Pure data
/// wiring against fake layouts; no dats, no GL.
/// </summary>
public class CharacterStatControllerTests
{
    // ── Header labels bind to the sheet ──────────────────────────────────────

    [Fact]
    public void Bind_SetsNameLabel()
    {
        var name = new UiText();
        var layout = Fake((CharacterStatController.NameId, name));

        CharacterStatController.Bind(layout, SampleData.SampleCharacter);

        Assert.Equal("Studio Player", name.LinesProvider()[0].Text);
    }

    [Fact]
    public void Bind_SetsLevelLabel()
    {
        var level = new UiText();
        var layout = Fake((CharacterStatController.LevelId, level));

        CharacterStatController.Bind(layout, SampleData.SampleCharacter);

        Assert.Equal("126", level.LinesProvider()[0].Text);
    }

    [Fact]
    public void Bind_SetsHeritageAndPkLabels()
    {
        var heritage = new UiText();
        var pk       = new UiText();
        var layout   = Fake((CharacterStatController.HeritageId, heritage),
                            (CharacterStatController.PkStatusId, pk));

        CharacterStatController.Bind(layout, SampleData.SampleCharacter);

        Assert.Equal("Aluvian Heritage",  heritage.LinesProvider()[0].Text);
        Assert.Equal("Non-Player Killer", pk.LinesProvider()[0].Text);
    }

    // ── XP meter fill ────────────────────────────────────────────────────────

    [Fact]
    public void Bind_SetsXpMeterFill()
    {
        var meter = new UiMeter();
        var layout = Fake((CharacterStatController.XpMeterId, meter));

        CharacterStatController.Bind(layout, SampleData.SampleCharacter);

        var fill = meter.Fill();
        Assert.NotNull(fill);
        Assert.True(System.MathF.Abs(fill!.Value - 0.63f) < 0.001f, $"expected ~0.63, got {fill}");
    }

    // ── Attribute list ───────────────────────────────────────────────────────

    [Fact]
    public void Bind_PopulatesAttributeList()
    {
        var list = new UiPanel();
        var layout = Fake((CharacterStatController.ListBoxId, list));

        CharacterStatController.Bind(layout, SampleData.SampleCharacter);

        var rows = list.Children.OfType<UiText>().First();
        var text = string.Join("\n", rows.LinesProvider().Select(l => l.Text));

        Assert.Contains("Strength",     text);
        Assert.Contains("Endurance",    text);
        Assert.Contains("Coordination", text);
        Assert.Contains("Quickness",    text);
        Assert.Contains("Focus",        text);
        Assert.Contains("Self",         text);
        Assert.Contains("100",          text);
    }

    // ── Robustness: a partial layout (missing ids) must not throw ────────────

    [Fact]
    public void Bind_MissingElements_DoesNotThrow()
        => CharacterStatController.Bind(Fake(), SampleData.SampleCharacter);

    // ── Helper ─────────────────────────────────────────────────────────────

    private static ImportedLayout Fake(params (uint id, UiElement e)[] items)
    {
        var dict = new Dictionary<uint, UiElement>();
        var root = new UiPanel();
        foreach (var (id, e) in items)
        {
            root.AddChild(e);
            dict[id] = e;
        }
        return new ImportedLayout(root, dict);
    }
}